ENTITY not1 IS
PORT(a : IN STD_LOGIC;
b : OUT STD_LOGIC);
END not1;
ARCHITECTURE no_t OF not1 IS
BEGIN
b <= NOT a;
END no_t;
刚学VHDL,编了一个简单的非门,出现了四句警告,不知是什么意思,用的是QUARTUS
1.Warning: The high junction temperature operating condition is not set. Assuming a default value of '85'.
2.Warning: The low junction temperature operating condition is not set. Assuming a default value of '0'.
3.Warning: No exact pin location assignment(s) for 2 pins of 2 total pins
Info: Pin b not assigned to an exact location on the device
Info: Pin a not assigned to an exact location on the device
4.Warning: The Reserve All Unused Pins setting has not been specified, and will default to 'As output driving ground'.